CC1101: Frequency Hopping, Wake-up on Radio, voice-over-UHF

1) Any software example demo the use of Frequency hopping technique?

No

2) How to configure Wake-up on Radio (WOR) function so that CC1101 only wake up after receiving ‘Sync word’, not by preamble or 433MHz carrier?

3) Any project example of implementing voice-over-UHF using CC1101?

There is an old appnote on using a CC1110 as a voice-over, but not the CC1101.

Hi,

How about Q2?

Thanks.

Q1: Very few changes are required to an existing Rx example (see processors.wiki.ti.com/.../Perf_value_line_easylink for one) to use WOR. Basically the WOR registers has to be set according to www.ti.com/.../swra126b.pdf and SWOR has to be strobed instead of SRX
Q2: It depends on the settings. You can set up the radio to look for a valid sync word instead CS for a given time (RX timeout). This is also covered in the app note linked to in Q1.